Arius macronotacanthus   Bleeker  1846 (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Size: 30 cm.

Color: Dark bluish above, whitish below, adipose fin with a large black spot.

Head nearly as high as broad, its greatest width about equal to head without snout, its bony shields finely granulated and rugous. Occipital process with a median keel, triangular, about as long as broad, its sideborders straight, its truncate hindborder touching the narrow, semicircular basal bone of the dorsal spine. The narrow median fontanel begins above the hindborder of the eyes and reaches nearly to the occipital crest. Dorsal profile with a convexity at the occipital process, very gently sloping down to the rounded, slightly prominent snout. Eye with a free orbital margin, nearly twice in snout and less than thrice in the interorbital space. Maxillary barbels extend to the end of the rough humeral process or somewhat farther, mandibulary barbels to base of pectorals, mental ones do not reach hindborder of gillmembrane. Height of dorsal shorter than head, its osseous spine with a filament, it is very strong, especially at its base, granulated in front, slightlyserrated behind and as long as head or somewhat shorter. Base of adipose fin equal to that of soft dorsal and thrice in its distance from lastnamed, above anterior half of anal, which is concave. Ventrals shorter than pectorals, which are about as long as head without snout, the osseous part of the strong flattened spine is equal to head without snout, granular in front, serrated behind. Small teeth in an arcuate band in the jaws, on the palate finely granular, in two elliptic widely separate patches, about as long as the eye, diverging posteriorly. 9 cylindrical gillrakers, decreasing rapidly in size, the longest conspicuously shorter than ½ of branchial filaments, about 1/3 of eye. Caudal with pointed lobes, the superior one the longer, nearly 6 times in the total length.

Synonym (s)
Arius macronotacanthus Bleeker, 1846
Arius macronotacanthus Day, 1876
Arius arius Cantor, 1850
Cephalocassis macronotacanthus Bleeker, 1858
Arius macronotacanthus Bleeker, 1862
Arius macronotacanthus Gunther, 1864
Arius macronotacanthus Volz, 1903

Common Name (s)
Economic Importance and Threats

Habitat:  Pelagic, Reef Associated, Demersal


• Andaman and Nicobar Islands INDIA

Literature Source(s)
  • Rao, DV; Devi, K and Rajan, PT (2000) An account of ichthyofauna of Andaman and Nicobar Islands, Bay of Bengal Occasional paper no 178 Records of the Zoological Survey of India ZSI, Calcutta 1-434 Available at - NCL, Pune
  • Devi, K and Rao, DV (2003) Poisonous and venomous fishes of Andaman Islands, Bay of Bengal Occasional paper no 211 Records of The Zoolgical Survey of India ZSI, Calcutta 25934 Available at - NCL, Pune
  • Jayaram, KC (1982) Aid to the identification of the siluroid fishes of India, Burma, Sri Lanka, Pakistan and Bangladesh: Ariidae and Plotosidae Occasional paper no 37 Records of the Zoological Survey of India ZSI 14977 Available at - NCL, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Weber, M; Beaufort, LF (1965) The fishes of the Indo-Australian Archipelago E.J. Brill, Leiden, Holland 2 404 pp Available at - NIO, Goa
  • Talwar, PK (1990) Fishes of Andaman and Nicobar Islands: A synoptic survey Journal of the Andaman Science Association Andaman Science Association, Port Blair 6(2) 71-102 Available at - NIO,Goa

Page last updated on:2011-07-01

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